Don't forget to flush XLOG_PARAMETER_CHANGE record.

Backpatch to 9.0 where XLOG_PARAMETER_CHANGE record was instroduced.

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 02cb5e50ab20b6a14c827ae3e901fabf8318b1be..b573185122fda459b4c4a0ebe045a7176f24c462 100644 (file)
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -8904,6 +8904,7 @@ XLogReportParameters(void)
        {
            XLogRecData rdata;
            xl_parameter_change xlrec;
+           XLogRecPtr  recptr;
 
            xlrec.MaxConnections = MaxConnections;
            xlrec.max_worker_processes = max_worker_processes;
@@ -8917,7 +8918,8 @@ XLogReportParameters(void)
            rdata.len = sizeof(xlrec);
            rdata.next = NULL;
 
-           XLogInsert(RM_XLOG_ID, XLOG_PARAMETER_CHANGE, &rdata);
+           recptr = XLogInsert(RM_XLOG_ID, XLOG_PARAMETER_CHANGE, &rdata);
+           XLogFlush(recptr);
        }
 
        ControlFile->MaxConnections = MaxConnections;